I asked the same question on youtube: how is that different from fridge magnets ... | Hacker News

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nraynaud on March 21, 2016 | parent | context | favorite | on: Polymagnets

I asked the same question on youtube: how is that different from fridge magnets whose Halbach arrays are printed directly too.

Kliment on March 21, 2016 [–]

Mainly in that you can customize the pattern. As far as I know the fridge magnets are a series of N/S stripes that are made by driving a long coil with AC and running the film past it at a speed tied to the mains frequency.

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